文章摘要
韩术鑫,王利红,赵长盛.内梅罗指数法在环境质量评价中的适用性与修正原则[J].农业环境科学学报,2017,36(10):2153-2160.
内梅罗指数法在环境质量评价中的适用性与修正原则
Applicability and modifications of the Nemerow index method in evaluating environmental quality
投稿时间:2017-04-10  
DOI:10.11654/jaes.2017-0519
中文关键词: 内梅罗指数法  环境要素  方法适用性  方法修正原则  污染因子权重
英文关键词: Nemerow index method  environmental factors  applicability of methods  modifications of methods  weights of pollution factors
基金项目:山东省重点研发计划(2015GSF120010)
作者单位
韩术鑫 山东省分析测试中心, 济南 250014 
王利红 山东省分析测试中心, 济南 250014 
赵长盛 山东省分析测试中心, 济南 250014 
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中文摘要:
      为研究内梅罗指数法在环境要素质量评价中的适用性及确定其修正原则,将方法的计算公式进行了数学推导。结果表明:典型内梅罗指数法的计算公式可变换为线性表达式,其斜率和截距分别为最大值(Fj,max)和算术平均值(Fj,ave)的权重系数;随着Fj,maxFj,ave比值的增大,Fj,max权重增大,Fj,ave权重减小。参评污染因子数量(n)对方法的评分结果具有重要影响,典型内梅罗指数法更适用于区域中目的性和指向性较明确或总体污染程度较轻的环境要素质量评价。为提高方法的适用性,确定了2种修正内梅罗指数法的划分原则,Ⅰ型和Ⅱ型修正内梅罗指数法分别以nFj,max/Fj,ave等于5作为划分结点,其中:Ⅰ型修正内梅罗指数法倾向于参评因子不多、评价目的性和指向性较强的环境要素质量评价;Ⅱ型修正内梅罗指数法是对Ⅰ型修正内梅罗指数法的拓展和延伸,更适用于多因子综合性质量评价。由内梅罗指数法线性表达式的数学内涵可知,在nFj,max/Fj,ave ≤ 5时,方法可不作修正,此时并不影响评价结果的客观性和准确性。
英文摘要:
      In order to study the applicability and modifications of the Nemerow index(NI) method used for evaluations of environmental quality, mathematical derivations were performed based on the original formula. The results showed that the formula of the NI method could be transformed into a linear equation. The slope and intercept of the equation could be the weight coefficients of the maximum value(Fj,max) and arithmetic mean value(Fj,ave), respectively. With increases in the ratio of Fj,max to Fj,ave, the weight of Fj,max increased while that of Fj,ave decreased. The number of pollution factors(n) participating in the evaluation had a significant influence on the results. The NI method was found to be more suitable for evaluation of environmental factors with clear purposes and directions, or those associated with low pollution in a region. In order to improve the applicability of the NI method, some modifications were proposed for two revised Nemerow index(RNI) methods. For the Ⅰ-RNI method, n=5 was used as the partition node, and the ratio of Fj,max to Fj,ave was equal to five for the Ⅱ-RNI method. The Ⅰ-RNI method was used to evaluate factors with clear purposes and directions, and those associated with less pollution; the Ⅱ-RNI method, an extension of the Ⅰ-RNI method, was more suitable for multifactor comprehensive evaluation. Based on the mathematical connotation of the linear equation for the NI method, when n or the ratio of Fj,max to Fj,ave is not more than 5, the original NI method can be used without affecting the objectivity and accuracy of the evaluation results.
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